This Specimen has been sold.
Rare, 4.5" Psychopyge Termierorum - Super Long Rostrum
This is a rare Psychopyge termierorum collected near Ofaten, Morocco . It's related to the more frequently seen Psychopyge elegans which comes from Issimour but has a much longer rostrum. The specimen including it's extended rostrum (which is prepared free of the limestone) is 4.5" long.
Trilobites were a very diverse group of extinct marine arthropods. They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago). They were one of the most successful of the early animals on our planet with over 25k described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left a excellent fossil record.